Timelines
 

Japanese Sewer History

Making Great Breakthroughs - All about the Sewage Works in Japan (Japan Sewage Works Association: Tokyo, ca. 2002), pp. 46-47.

 

1583 Stone culvert built around Osaka Castle (Taiko Sewerage)
1873 Sewer pipes built in the Ginza region of Tokyo (open sewage ditches covered)
1881

Sewerage system constructed in foreigners' settlement in Yokohama

1884

Sewerage system constructed in Kanda, Tokyo

1894 City of Osaka started water supply and Sewerage system improvement project
1895 Honda Pumping Station completed in Osaka (first pumping station in Japan)
1900 Old version of Sewerage Law promulgated; Filth Cleaning Law promulgated
1922

Mikawasima Wastewater Treatment Plant in Tokyo started operations

1930 Activated sludge process started at Horidome and Atsuta Treatment Plant in Nagoya
1948 First public Sewerage system project after WWII started by Fukui City
1952 Local Public Enterprise law established
1958 New Sewerage Law promulgated
1962 Sewerage-related administration procedures centralized in the Ministry of Construction
1963 First Five-Year Program for Sewerage Construction established
1964 Japan Sewage Works Association established
1965

Regional Sewerage system construction at Neya River Basin started

1970 Sewerage Law revised: Water Pollution Control Law promulgated
1971 Sewerage and Sewage Purification Department established in the Ministry of Construction (currently the Ministry of Land, Infrastructure and Transport)
1972

Sewage Works Center started (Currently Japan Sewage Works Agency)

1975 Basinwide Sewerage Division established in the Sewerage and Sewage Purification Department in the Ministry of Construction
1984 Law Concerning Special Measures for Conservation of Lake Water Quality established
1996 Sewerage System Law amended to allow general telecommunications companies use of optical fiber cables inside sewer pipes
2000 Percentage of sewered population reached 60%

 

History of Sewage Works by City (1870-1900)

City Year Event
Tokyo 1872-1875 Western-style ditches constructed in the Ginza area after a big fire
  1884-1885 Brick and ceramic sewer pipes added in Kanda
  1908 Sewerage System Basic Plan established; the system (subject population: 3 million, area: 5,670 hectares) is the base of today's systems.
  1911 Construction started. (The First Sewer System Improvement Project)
Yokohama 1881 The first sewerage system in Japan built
Osaka 1894 Spurred by outbreaks of cholera in 1886 and 1890, construction began; by 1899, construction in almost all parts of the old section
of the city was finished.
  1909 A survey to study the existing system, which was intended to be only temporary, started in 1906. Reconstruction started in 1909 and finished in 1923. This is the foundation of the current system.
Sendei 1899 Construction started
Hiroshima 1908 Construction started
Nagoya 1908 Construction started

 

History of the Wastewater Treatment Process

Year City Treatment Plant Treatment Process
1922 Tokyo Mikawashima Standard-rate trickling filter process
1930 Nagoya Horidome Diffused aeration activated sludge process
1908 Nagoya Atsuta Diffused aeration activated sludge process
1933 Nagoya Tsuyuhashi Primary treatment Diffused aeration activated sludge process
1934 Kyoto Kisshoin Diffused aeration activated sludge process
1935 Toyohashi Noda Mechanical activated sludge process
1937 Gifu Chubu Diffused aeration activated sludge process
1937 Tokyo Shibaura Mechanical activated sludge process
1938 Kyoto Toba Diffused aeration activated sludge process
1940 Osaka Tsumori Diffused aeration activated sludge process
1940 Osaka Ebie Diffused aeration activated sludge process

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